Syntax For Mathematical Operations As SIN , COS And TAN In VB 2005?
Jan 30, 2010What is the syntax for mathematical operations as SIN, COS and TAN in Visual Basic 2005?
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Syntax And Control Statements For String Operations
Nov 1, 2011VB syntax functions for string operations
View 2 RepliesVS 2005 : Creating A Dll For XML Operations?
Aug 19, 2010I want to create a dll in VB.NET. The functionality of the dll is that it should include all the xml operations. Any application that uses this dll will just pass the node that has to be selected. The dll will accept the node name and search for the node in the xml file and return the details of the node. For example:if the xml file is like
<Node1>
<Node2>
<Node21 Attribute1 = "Value1" Attribute2 = "Value2" />
<Node22 Attribute1 = "Value11" Attribute2 = "Value22" />
[code]....
If the application which uses the dll calls a function named readNode(Node3) which is defined in the dll, then the dll should be able to retrieve all the details of Node3 including subnodes and theire attribute values and return it to the calling application. All the XML operations are to be done in the dll. The calling application will just call the method in the dll by passing the node name and it should be able to get all the node or attribute values.
VS 2005 Getting A Syntax Error?
Mar 11, 2010[code]...On the update I get a syntax error and do not no why?
View 10 RepliesVS 2008 .net And Sql 2005 Syntax?
Feb 12, 2010I am using vb.net 2008 and sql 2005. I am writing a program to translate data from one database to another. Basically I have two dataGridViews, the original data is automatically populated to the first and on clicking the "Translate" button the second dataGridView is filled with the translated information. I am having trouble with the syntax of passing a value from the original dataGridView to SQL and returning the 'id' of the translated data table. For instance, the original has colors stored as "Blue" "Green" etc The new tables now have unique ID's with the color name as attributes. I need to basically be able to pass dgvOriginal.rows(i).cells("color").value to a stored procedure and get the "id" field of that color. Here is what I have so far.
[Code]...
Syntax Differences Between 2005 & 2008
Jul 20, 2011I wou;d like to know if the synthax used wen writing the codes is still the same in vb05 and vb08, if not wats the difference?
View 1 RepliesVS 2005 - Syntax Listbox - Getting Value After User Type
Dec 31, 2009I want a box(listbox or textbox) in VB.Net form. then when I running the program, user can type a value in the box. can I ask user to type and read the value user typed into a variable. Example: User type 4.137, the program will read 4.137 and assign it to a variable A. I try to find the syntax to do this on VB.net but I have no luck finding the right syntax to read the value. I using VS 2005.
View 3 RepliesVS 2005 Syntax Error: Missing Operand Before '*' [/B]operator
Aug 13, 2011i got an error in my code which is [b]Syntax error: Missing operand before '*' [/B]operator. i am using visual studio 2005 and sql 2005 database here i attach the code.In this code i try to use button the search data in database( table name staff) using a column =NAME and text box as user input
private Sub Search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsearch.Click
Me.StaffBindingSource.Filter = "NAME = *" & Me.txtsearch.Text & ""
End Sub
VS 2005 Update A .csv File - OleDb Syntax Error Into Statement
Feb 12, 2011I am suddenly getting an into statement error and can not seem to figure out why When I try to update a .csv file I get: syntax erroe in INSERT INTO statement When I try an update a textfile I get: The INSERT INTO statement contains the following unknown field name: 'SellingPrice'. Make sure you have typed the name correctly, and try the operation again.
[Code]....
Displaying A Mathematical Formula In A Form?
Jun 21, 2010How can I print a mathematical formula in a form? For a example I found in wikipedia a guide to do it in HTML: [url]
[URL]
But how can I do it in VB2008, showing the formula in a form?
Evaluating Mathematical Expression In A String?
Jul 7, 2011Is there a method that allows me to evaluate a mathematical expression in a string? Example (Not actual Code):
Input = "2+2"
Output = SomeMethod(Input)
Output = 4
Update: Nevermind, I found a way around it by using DataTable.Compute.
Mathematical Calculation Model Code?
Jan 7, 2009i need mathematical calculation model code.
View 2 RepliesMathematical Program (Function To Workout NCR)?
Mar 11, 2009i got bored earlier so instead of doing my Maths homework i thought what the hell why dont i make a program to do it for me. The problem is im getting an error with my NCR function.For those of you who dont know NCR is used in calculating Statistics generally it goes like this
[Code]...
VS 2010 Reading A Mathematical Operation?
Dec 15, 2011heres the problem lets assume i have a label1 which its text is "(y+1)"i defined an integer, lets assume its x i made some operations up and lets say there can be diffrent results and i want to replace y with that math ops result and then define x as it writes in label1..
[Code]...
Compressor & Decompressor: Mathematical Smallest Combination?
Jul 12, 2009How to load file and save it as different filename? It saves almost twice the original size for some reason?
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim iFile As System.IO.File[code].....
Question 02:How to load it as numerical values?
Question 03:How to try applying an array of mathematical functions to the numerical values to see if size reduction is possible: I want to try testing all mathematical functions with any and all mathematical values of smaller size to see if the file can be compressed.
Create (fast) Mathematical Equations At Runtime
Jun 16, 2009Is there a way to create new mathematical equations at runtime? Obviously you can pass new variables to a given equation, but I need to make a new equation altogether (then give it variables).
[Code]...
Expected Value (mathematical Expectation) In Visual Basic .NET?
Nov 21, 2011I've got a program which starts with welcome screen "Enter the number of the random variables X" and this number refers to the columns. If it is entered 5 => a DataGridView will be created with 5 columns and 2 rows (first one is for random variable entered by the user, and the second is for probability). For example:I have to multiply x1 with probability p1, value x2 with probability p2, and so on. So EX = x1*p1 + x2*p2 +... Here comes the question - how to multiply and then add them?There are only 2 rows, that's how much I need :I've enabled only 2 rows, that's how much I must have for this program:
Const allowedRows As Integer = 2
Private Sub DataGridView1_UserAddedRow(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewRowEventArgs) Handles DataGridView1.UserAddedRow
[code].....
Mathematical Equation - How To Disable Numeric UpDown
Dec 21, 2009This is my way the dynamically generate a mathematical equation everytime the button is click. However, I want the combobox or the numericupdown turn disabled when the next question show out. For example, if the question N is generated, the combobox and numericupdown of question generated before N must be disable means that the user only can input to the current question but cant change the answer of the previous question?
Private Sub btnnext_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnnext.Click
If counter < 10 Then
Dim pnl As New Panel
pnl.Height = 40
pnl.BorderStyle = BorderStyle.FixedSingle
[Code] .....
Evaluate Mathematical Expression From User Input String?
May 19, 2010I am making a simple calculator that will evaluate functions I have a entry box and the user types in simple equations i.e. 1+4*3/5=? how would i make this evaluate the string?
View 7 RepliesHow To Make A Program In Which The User Can Input A Mathematical Function
Mar 29, 2009i want to make a program in which the user can input a mathematical function so the program can then work with it. So the user would input something like x^4+x+2 and then an x and the program would calculate f(x). What i don't know is how to let the user input the function.
View 6 RepliesUses Of Arrays In Programing - Mathematical Concept Such As Fibonacci Sequences?
Feb 7, 2012I am trying to get a better understanding of the uses of arrays in programing, and have been wondering why do programmers use an array when working with mathematical concept such as Fibonacci sequences? why are arrays so prevalent in coding now a days.
View 3 RepliesVS 2010 - How To Use Mathematical Signs As Label Text Randomly
Oct 29, 2011How to use the signs "+", "-", "*", "/" as label text randomly. I am trying to create a math game for my kids. There I need a random sign to display every time they get new question to solve. I am able to display values [random numbers] but could not able to use this signs randomly as a single label text.
View 8 RepliesWhat Data Type Will Allow The User To Input 0 And Allow The Mathematical Functions To Work Properly
Mar 29, 2011I am currently using double data types. The problem I am encountering is that sometimes the user will have to input a value of 0 in the required text box and this creates an error. My question is what data type will allow the user to input 0 and allow the mathematical functions to work properly. Decimals maybe?
View 8 RepliesSyntax/Command Trying To Implement Syntax Highlighting In RichTextBox?
Oct 12, 2011I am having an issue trying to figure this out. I am writing a script editor that uses tabs (a tab control) and I want to implement syntax highlighting. My issue is that every sample I can find on syntax highlighting uses
Private Sub RichTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RichTextBox1.TextChanged
C# - Syntax Conversion - Translate Syntax ?
Dec 16, 2009Can any one translate the following syntax to vb.net.
m_TextBox.Loaded += TextBoxLoaded
m_TextBox.Loaded -= TextBoxLoaded;
private void TextBoxLoaded(object sender, RoutedEventArgs e)[code].....
.net - Add ProgressBar While Making Operations?
Feb 10, 2012my update script in VB.NET, i'm making some stuff, and I want, while all funcs are executed, a progressbar to be displayed? How to do that? Here is my execution sub:
[Code]...
Add Operations From A Listbox Into A Timetable
Dec 19, 2011I'm new in VB.net but I'm trying to make application (planning-game). The game is about showing students the planning 'complexity' of a operation room in a hospital. I created a listbox which randomly shows 5 operations. But now I would like a function which makes it possible to add a selected operation to a timetable. The timetable has blocks of 30 mins (example 08:00 - 08:30, 08:30 - 09:00 etc..). This because 1 type operation takes 1 hours and 1 takes 1:30 hours. Now I have given the operations a value by using a label. [code]
View 1 RepliesImproving The Assigning Operations Of .NET?
Dec 10, 2009I have an idea about improving the assigning operations of VB.NET (maybe other .NET languages too.) It is similar with "With ... End With" block:
[Code]...
So we don't type "Some Text" every time. Do you think does this idea work? Maybe in the future we can see something like that?
Listview1 To Listview2 After Some Operations?
Jan 6, 2012Ime1 = ListView1.SelectedItems(0).Text
ListView2.Items.Add(Ime1)
If MkCal1 < 0 Then
ListView2.Items(0).SubItems.Add("Nepoznato")
Else
[Code]...
The problem is when I click the next time to button, listview2 add only first rows from listview1
Make The Operations Run On Another Thread?
Sep 13, 2009I have an application in which I am running a separate thread.
Dim thread As New System.Threading.Thread(AddressOf Main)
thread.Start()
However, the thread makes reference to an textbox named Output, and it generates this error upon execution:
System.InvalidOperationException was unhandled
Message="Cross-thread operation not valid: Control 'Output' accessed from a thread other than the thread it was created on."
Source="System.Windows.Forms"
(message shortened for space)
How can I make the operations run on another thread, but still use the Output object? I cannot call a subroutine to do that for me, as it generates the exact same error.
The method called is AppendText, by the way.
